package wiki;

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

import com.*;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.json.simple.*;

/**
 * 
 * @author mona.chandrapal
 */
@WebServlet(name = "GetCategories", urlPatterns = { "/GetCategories" })
public class GetVersions extends HttpServlet {

	protected void processRequest(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		response.setContentType("application/json");
		PrintWriter out = response.getWriter();
		JSONObject versions = null;
		JSONObject version = null;
		ArrayList versionlist = new ArrayList();

		Root root = new Root();
		ResultSet rs = null;
		PreparedStatement pst = null;
		String sql1;
		try {

			root.initConnection();
			sql1 = "Select version from versions where  deleteflag = 0 order by version;";
			pst = root.con.prepareStatement(sql1);
			rs = pst.executeQuery();

			versions = new JSONObject();

			while (rs.next()) {
				versionlist.add(rs.getString("version"));
			}

			versions.put("versions", versionlist);

		} catch (Exception e) {
			System.out.println("Exception getting versions: " + e.toString());
		}finally{
			try {
				rs.close();
				pst.close();
				root.closeConnection();
			} catch (Exception e) {
				
			}
			
			
		}

		out.println(versions.toString());
	}

	// <editor-fold defaultstate="collapsed"
	// desc="HttpServlet methods. Click on the + sign on the left to edit the code.">

	/**
	 * Handles the HTTP <code>GET</code> method.
	 * 
	 * @param request
	 *            servlet request
	 * @param response
	 *            servlet response
	 * @throws ServletException
	 *             if a servlet-specific error occurs
	 * @throws IOException
	 *             if an I/O error occurs
	 */
	@Override
	protected void doGet(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		processRequest(request, response);
	}

	/**
	 * Handles the HTTP <code>POST</code> method.
	 * 
	 * @param request
	 *            servlet request
	 * @param response
	 *            servlet response
	 * @throws ServletException
	 *             if a servlet-specific error occurs
	 * @throws IOException
	 *             if an I/O error occurs
	 */
	@Override
	protected void doPost(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		processRequest(request, response);
	}

	/**
	 * Returns a short description of the servlet.
	 * 
	 * @return a String containing servlet description
	 */
	@Override
	public String getServletInfo() {
		return "Short description";
	}// </editor-fold>
}
